Device for holding lumber to be cut



M. T. RICHARDS.

DEV-ICE FOB. HOLDING LUMBER TO BECUT. APPLICATION FILED me. 21, I922.

Patema'me 20, 1922.

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Specification of Letters Patent.

Patented June 20, 1922.

Application filed January 27, 1922. Serial No. 532,220..

T 0 all whom it may concern:

Be it known that I, MrnnL T. RICHARDS, a citizen of the United States,residing at Bristol, in the county of Sullivan and State of Tennessee,have invented certain new and useful Improvements in Devices for HoldingLumber to be Gut, of which the follow ing is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to a device for holding lumber to be cut, and theobject is the provision of means for cutting lumber in a true circle bya band saw, and my device is used largely in the manufacture of tabletops.

lVith the foregoing and other objects in view, my invention comprisescertain novel combinations, constructions and arrangements of parts aswill be hereinafter described, illustrated in the accompanying drawingsand more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a perspective view of an apparatus employing my invention,in the cutting of round table tops.

Figure 2 is a fragmentary, top, plan view of the apparatus shown in Fig.1.

Figure 3 is a perspective view of the bracket device.

Figure 4 is a fragmentary view, partly in section and partly inelevation, of the bracket device.

Referring to the drawings by numerals, 1 designates the support orframe, comprising uprights 2; the uprights 2 have bifurcations 3 formedin their upper ends, and in these bifurcations are bolts 1. These boltssecure guide bars 5 on the uprights in an adjusted position. Each guidebar is provided with a longitudinally-extending slot 6 formed in itsside, and by means of a bolt 7, positioned in the registering slots 6,of bars 5, the sliding bearing block 8 is retained in an adjustedposition upon the frame 1. Block Sis provided with a vertical aperture9, in which is positioned a supporting pin or shaft 10 of the bracketdevice 11 (Fig. 3).

The shaft 10 is provided, near its upper end, with an integral collar12, which prevents the shaft from slipping too far through the aperture9 of block 8. Shaft 10 is provided with an upper, reduced end 13 thatextends into the base 14 of the portion of base 14:, and integral withthe top of the back is a horizontal top 17. A set- I screw 18 isthreaded through the forward portion of top 17 and is adapted to engagethe lumber 19, for holding the lumber upon the bracket 11. Inpositioning the lumber 19 upon the bracket, the rear edge of the lumberis forced against the stop pins 15 (Fig. 1), and then the set-screw 1-8is turned to cause the inner end thereof to tightly engage or clampagainst the lumber.

The operation of the apparatus is as follows: Upon placing the lumber inthe bracket device, as stated, theinner edge of the lumber will be justat the center of the top of shaft 10, with the set-screw 18 pressingdown on the lumber, holding it in place; the lumber is then out by theband saw 20 (the'lumber being turned to the saw as it progresses) andthe lumber being thus cut in a true circle, or semicircle, as desired,and the size of the lumber to be out to be regulated by adjusting thebracket device along the bars 5.

While I have described the preferred embodiment of my invention, andhave illustrated the same in the accompanying drawings, certain minorchanges or alterations may appear to one skilled in the art to whichthis invention relates, during the extensive manufacture of the same andI,

' therefore, reserve the right to make such alterations or changes asshall fairly fall within the scope of the appended claims.

What I claim is:

1. In a device of the class described, the combination with a frame, abearing block adjustably mounted on said frame, of a supporting shaftprovided near its upper end with an integral collar and with a reducedupper end mounted within the bearing block, a bracket device comprisingan elongated base having said reduced end of the shaft positionedtherein, the collar on said shaft engaging the bearing block, verticalstop pins formed upon the base near its rear edge and at opposite endsof the base, a vertical, integral back formed upon the base at thecenter of its rear edge, a horizontal top integral with the back andoverhanging the base, and a set-screw at the front edge of and extendingthrough the top, substansupported upon said bolts, a bolt in saidslottially as shown and described. ted bars, a bearing. block secured tosaid 2. In a device of the class described, the last-mentioned bolt, anda bracket device 10 combination with a "frame provided with upcarried bysaid bearing block. 5 rights, each upright provided with a bifur- Intestimony whereof I hereunto aflix my cation formed in its upper end,belts in the signature. bifurcations of said uprights, slotted barsMIKEL T. RICHARDS.

